GEL: I mentioned about a month or so ago that I finally learned that when my wife cries during an argument, I'm not supposed to just sit there and let it happen. Although I really don't want to get close to her during these arguments because, well, instintively I think she might push me away or perhaps bonk me, she told me she just feels isolated from me and unloved when I don't try to comfort her.
Maybe the C telling him that he was being kind of a dick in failing to comfort you made an impression.
Why not test it out tonight? Start a fight, start crying, and see if he comforts you.